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THERRIAULT, J.-C., J. PAINCHAUD, P. HODSON, M. CASTONGUAY, G. WALSH, J. GEARING, M. KINGSLEY, B. TESSIER, 1990. Le plan d'action Saint-Laurent à la Direction des sciences, Institut Maurice-Lamontagne : orientations et objectifs. Rapp. manus. can. sci. halieut. aquat., 2055, 15 p .
The authors from the Maurice Lamontagne Institute, Quebec, Canada, present a research plan that will add to their knowledge of the causes and effects of the chemical pollution of the St. Lawrence River.
PAINCHAUD, J., D. LEFAIVRE, G.-H. TREMBLAY, J.-C. THERRIAULT, 1990. Analysis of the distribution of suspended particulate matter, bacteria, chlorophyll a and Po4 in the Upper St. Lawrence Estuary, using a two-dimensional box model. Pages 59-65 in W. Michaelis (ed.). Estuarine water quality management : monitoring, modelling and research. Springer-Verlag, New York (Coastal and estuarine studies, 36) .
PAINCHAUD, J., 1990. La transition saline du Saint-Laurent : barrière ou lien entre les écosystèmes fluvial et marin?. Pages 225-237 in D. Messier, P. Legendre & C.E. Delisle (éd.). Symposium sur le fleuve Saint-Laurent - un fleuve à reconquérir, 3-5 novembre 1989. Association des biologistes du Québec, Montréal (Collection Environnement et géologie, 11) .
DESILETS, H., J. PAINCHAUD, J.-C. THERRIAULT, 1989. Abondance, composition spécifique et biomasse du phytoplancton de l'Estuaire moyen du Saint-Laurent. Rapp. tech. can. sci. halieut. aquat., 1698, 65 p .
This report contains abundance and specific composition data of 49 phytoplankton samples from the Upper St. Lawrence Estuary (summer 1982). Smayda's (1978) method for estimating phytoplankton biomass was applied to these data. Although more time-consuming, the plasma volume method yields a better image of phytoplankton biomass than traditional methods. Phytoplankton abundance is highest at the station located in the Lower Estuary; however, it decreases to considerably lower values in the Upper Estuary. Phytoplankton abundance reaches again higher levels in fresh water. In the Upper Estuary, microflagellates dominate the phytoplankton community. Biomass follows a similar pattern : it is highest in the Lower Estuary, lowest in the Upper Estuary and intermediate in fresh water. Ciliated protozoans are observed at all stations. Our observations suggest that the study area is not favorable for the development of local phytoplankton communities.
PAINCHAUD, J., J.-C. THERRIAULT, 1989. Relationships between bacteria, phytoplankton and particulate organic carbon in the Upper St. Lawrence Estuary. Mar. Ecol. Prog. Ser., 56: 301-311 .
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